IAD - SYD

$759 Find Cheap Flights from Washington Dulles Airport to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Sydney departing on 14/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Sydney, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
$1,714
Typical prices: $2,901-$1,599
Multiple Airlines
Wed 13/5Mon 25/5
IAD - SYD • 3 stops
Cheapest one-way flight
$759
Typical prices: $1,356-$1,563
Multiple Airlines
Thu 14/5
IAD - SYD • 2 stops
Top airlines
Qantas Airways
Cheapest • from $1,970 (return)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Dulles Intl and Sydney. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
When to book
7 weeks
in advance
Our data shows that travellers who book at least 7 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 8% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Sydney (IAD-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Dulles Intl to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Dulles Intl to Sydney

Wed, 13 May - Mon, 25 May
Multiple Airlines Logo
07:40 - 11:50
IAD
-
SYD
38h 10m
3 stops
Multiple Airlines Logo
13:15 - 10:12
SYD
-
IAD
34h 57m
3 stops
$1,714Multiple Airlines
Wed, 3 Jun - Thu, 18 Jun
Qantas Airways Logo
19:24 - 06:55
IAD
-
SYD
21h 31m
1 stop
Qantas Airways Logo
12:00 - 18:34
SYD
-
IAD
20h 34m
1 stop
$1,970Qantas Airways
Wed, 2 Sep - Sat, 19 Sep
Qantas Airways Logo
14:53 - 06:55
IAD
-
SYD
26h 02m
1 stop
Qantas Airways Logo
12:00 - 22:47
SYD
-
IAD
24h 47m
1 stop
$1,998Qantas Airways
Tue, 1 Sep - Tue, 8 Sep
Turkish Airlines Logo
21:45 - 19:10
IAD
-
SYD
31h 25m
2 stops
Turkish Airlines Logo
21:05 - 11:35
SYD
-
IAD
52h 30m
2 stops
$2,001Turkish Airlines
Tue, 22 Sep - Tue, 6 Oct
Turkish Airlines Logo
13:20 - 19:10
IAD
-
SYD
39h 50m
2 stops
Turkish Airlines Logo
22:05 - 11:35
SYD
-
IAD
52h 30m
2 stops
$2,008Turkish Airlines
Tue, 8 Sep - Tue, 15 Sep
Turkish Airlines Logo
13:20 - 19:10
IAD
-
SYD
39h 50m
2 stops
Turkish Airlines Logo
21:05 - 11:35
SYD
-
IAD
52h 30m
2 stops
$2,012Turkish Airlines
Tue, 8 Sep - Thu, 24 Sep
Turkish Airlines Logo
13:20 - 19:10
IAD
-
SYD
39h 50m
2 stops
Turkish Airlines Logo
21:05 - 11:35
SYD
-
IAD
52h 30m
2 stops
$2,017Turkish Airlines
Wed, 26 Aug - Tue, 8 Sep
Turkish Airlines Logo
13:20 - 19:10
IAD
-
SYD
39h 50m
2 stops
Turkish Airlines Logo
21:05 - 11:35
SYD
-
IAD
52h 30m
2 stops
$2,026Turkish Airlines
Tue, 22 Sep - Tue, 6 Oct
Turkish Airlines Logo
21:45 - 19:10
IAD
-
SYD
31h 25m
2 stops
Turkish Airlines Logo
22:05 - 19:50
SYD
-
IAD
36h 45m
2 stops
$2,031Turkish Airlines
Tue, 22 Sep - Fri, 2 Oct
Turkish Airlines Logo
21:45 - 19:10
IAD
-
SYD
31h 25m
2 stops
Turkish Airlines Logo
21:05 - 19:50
SYD
-
IAD
36h 45m
2 stops
$2,033Turkish Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Sydney flights

Get data-powered insights and trends into flights from Dulles Intl to Sydney to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Washington, D.C. Dulles Intl Airport to Sydney?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Sydney departing in May.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Sydney is November, where tickets cost $2,104 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $3,146 and $2,309 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Sydney, you should book around 7 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Find deals

Good to know

Low seasonApril
Cheapest flight$759
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from Washington Dulles Airport to Sydney

When to book flights from Dulles Intl to Sydney

Are your dates flexible? Find out the best times to travel from Dulles Intl to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Sydney flights

  • Which airlines are suitable for families flying from Washington Dulles Airport to Sydney?

    Families with children traveling from Washington Dulles Airport to Sydney should consider traveling with Qantas Airways. They provide activity packs filled with games, puzzles, coloring books, and other fun items to keep young passengers entertained during the flight. Qantas Airways also offers a dedicated children's inflight entertainment section featuring a variety of movies, TV shows, and music suitable for different age groups.

  • Which airline should I book for an unaccompanied minor flying from Washington Dulles Airport to Sydney?

    United Airlines is a great option for an unaccompanied kid traveling from Washington Dulles Airport to Sydney. According to United Airlines regulation, a child between the ages of 5 and 15 are permitted to fly alone as long as they have parental or guardian consent and can show identification. A passport or a driver's license with a current photo is required from parents or guardians. In addition, parents or guardians must complete the Unaccompanied Minors Form in person at the airport of departure.

  • Which airline from Washington Dulles Airport to Sydney is ideal for persons with special needs?

    If you have special needs and require extra assistance, fly on Qantas Airways from Washington Dulles Airport to Sydney. The airline assists passengers who require mobility aid, including wheelchair assistance, during boarding and disembarkation. They provide accessible seating options and priority boarding for passengers who need extra time or assistance. Passengers with visual impairments can request assistance with Braille safety cards and cabin announcements.

  • Which airlines offer business and first-class flights from Washington Dulles Airport to Sydney?

    Business and first-class flights are available from Washington Dulles Airport to Sydney on United Airlines and Qantas Airways. United Airlines provides pre-departure refreshments, premium entertainment, and bedding from Saks Fifth Avenue. Qantas Airways offers first-class, business-class, and premium economy flights with great service, gourmet meals, and an extensive wine list.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Sydney?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Sydney was $759 for a one-way ticket and $1,714 for a return.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Sydney?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Sydney.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Washington Dulles Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sydney with an airline and back to Washington Dulles Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Sydney

  • Passengers flying from Washington Dulles Airport (IAD) to Sydney will land at Sydney Airport (SYD). Sydney Airport (SYD) is a base for Qantas Airways, which offers competitive prices and flexible travel policies for flights from IAD to SYD.
  • You can get flights from Washington Dulles Airport to Sydney with a layover en route. The layovers differ with your airline, with most stopping at their hubs or base of operation. United Airlines and American Airlines flights have a layover at Los Angeles (LAX) and San Francisco (SFO), respectively, while ANA flights stop in Tokyo (HND).
  • Qantas Airways provides sustainable flights to Sydney from Washington Dulles Airport. Qantas Airways prioritizes sustainability in its operations and invest in eco-friendly aircraft technology. The airline is committed to reducing greenhouse gas emissions, improving fuel efficiency, and investing in sustainable aviation fuels. They prioritize aircraft fleet renewal with more fuel-efficient and lower-emission planes.
  • United Airlines has pet-friendly policies for flights from Washington Dulles Airport to Sydney. Pets are permitted in the cabin or cargo hold in an authorized kennel or carrier. The kennel or carrier should be leak-proof, well-ventilated, and have enough space for the pet. The carrier's maximum size and weight limits are 17 x 12.5 x 7.5 inches and 17 lb, respectively.
  • Public transport options from SYD to downtown Sydney include the train and bus. Train T8 runs every 5 minutes from the airport station to downtown Sydney. Murrays Coaches operates a bus that runs every hour from the Terminal 1 bus stop to downtown Sydney.

Reviews of the top airline flying from Dulles Intl to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9672 reviews
7.7Boarding
6.6Food
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

Vegetarian selection could be better. Bread was too hard to chew.

8.0 ExcellentAnonymous, Apr 2026
IAD - FRA
Read more United Airlines reviews

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Everything you need to know for your flight from Dulles Intl to Sydney

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Sydney (SYD)